hackskii

Copy and paste:
http://www.medscape.com/viewarticle/537367_4

Milk intake may affect acne severity through the Insulin-like Growth Factor-1 (IGF-1) pathway. In two large cross-sectional studies, milk consumption was positively associated with higher plasma IGF-1 levels[20,21] and in both studies, this was predominantly an association with skim milk. In a randomized clinical trial of the effect of milk intake on bone remodeling, intakes of skim and low fat milk were associated with increased serum IGF-1 levels in both sexes.[22] It is not clear whether the increased IGF-1 is endogenous—released in response to milk intake—or exogenous IGF-1 from milk. Human and bovine IGF-1 share the same amino acid sequences [23] and several milk proteins, including IGF-binding proteins (IGFBPs) protect IGF-1 from digestion in the gut.[24,25] Animal studies have shown that milk borne IGF-1 can be absorbed after oral intake.[24] IGF-1 directly stimulates basal keratinocytes' proliferation.[26,27] Although both serum androgens and IGF-1 levels rise at puberty, the period of maximum prevalence of acne and the course of the condition follow the levels of IGF-1 more closely than levels of androgens.[28] There is also a stronger correlation in women between acne lesions and IGF-1 compared to androgens.[29]

Milk intake may influence comedogenesis because it contains several bioactive molecules that can act on the pilosebaceous unit including androgens, 5α-reduced steroids and other steroid hormones.[30,31] Many of these bioactive molecules survive processing and in the case of cheese, fermentation results in the production of more testosterone from precursors in milk.[31] The level of androgens in milk has generally been considered low and first-pass metabolism in the liver may further reduce its bioavailability compared to the daily endogenous production in young children and adolescents. However, recent studies have questioned the methodology and assays on which estimates of daily production rates of endogenous steroid hormones in pre-pubertal children are based.[32] Dietary intake may be a more significant source of androgens than previously thought.[33] Milk also contains estrogens, some of which are produced in the lactating bovine mammary gland and are direct suppressors of sebaceous gland function.[28]

Some hormones in milk are carried by whey proteins, including α-lactalbumin, which also have intrinsic biological functions.[34] Animals fed α-lactalbumin-enriched whey protein show increased will and capacity to engage in physical activities, gains in lean body mass, improved efficiency of exercise training, and decreased percentage body fat mass; all of which are similar to the effect of androgens.[35,36,37] In addition, α-lactalbumin undergoes pressure-induced conformational alteration, possibly because of centrifugation stresses during processing; this leads to changes in biological function.[38] Whey proteins are also added to low fat and skim milk to simulate the consistency of whole milk. These proteins might therefore play a role in acne.

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Scott


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hackskii

Loren Cordain wrote this.
Dr. Cordain explains the causes of acne, and its connection to diet. You’ll learn how pore blockage also results from excess blood concentrations of a hormone called IGF-1, and insufficiencies of another hormone called IGFBP-3, and how the food you eat influences both of these hormones.


Despite the nearly universal presence of acne in westernized countries like the U.S., there is intriguing evidence from frontier physicians, explorers and anthropologists that the prevalence of acne is lower in native people living and eating in their traditional ways. These observations had not been formalized in the medical literature until 2002 when Dr. Cordain and his colleagues published a landmark study in The Archives of Dermatology. In this study, they examined a group of people living on the remote Kitavan Islands off the coast of Papua New Guinea. Out of the 300 young people examined on the Kitavan Islands, there was not a single pimple to be found.

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Scott


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DaPs

Toxic, you shouldn't stop eating nuts if you are not allergic, the question ''should i stop eating nuts'' is just stupid. If someone is having an allergic reaction to a certain thing though, then yes, they should stop eating it.

On the atkins thread i said that if you starve your body of a certain food, such as carbohydrate, it can be damaging, which it can; because it is never good to cut such an important thing out of your diet for a prolonged period. Where your getting the idea that this is complete rubbish is beyond me.

Back on topic anyway.

thestudbeast

OMFG you are just clueless. Go talk to some eskimo's and educate your self and stop repeating the same non-sense. This was explained to you....... carbs are not required by the human body have you ever heard of an essential carbohydrate?

astro_warp

more rhetoric

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astro_warp

I'd be inclined to believe that genetics and climate/lifestyle go long way to making them able to survive on such a low carb diet and I'm not so sure its as black and white as you suggest,particuarly as 50% of calories are sourced from fat.

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AussieMarc

just a question, if carbs aren't essential than why do they exist? saturated fat is still essential but in excess is not good. i could be wrong here as im going by a guess, i believe you would need some form of carb in order to function - as carbs are the fastest food that converts to energy (as far as i know), so if you cut them out completely you will feel lethargic because your body has to work harder to convert the food you eat into energy. am i wrong here? open for discussion. as i said this is more a question than a statement :P

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toxictoffee

lol i cannot debate with you mate you have no idea

its like watching a fish ride a bike, you want to help but you know its simply never going to work

as for carbohydrates?

they are not neeeded, there is no such thing as an essential carbohydrate as there are essential fatty acids and essential amino acids

whilst some of the most of the most important micronutrients are sourced freely in carbohydrate rich food, they can be found elsewhere and the notion of the carbohydrate being essential is factually incorrect

the brain can run off ketones, the skeletal muscles in the body can, they just prefer carbs for anaerobic metabolism

does this make them essential? no not in the slightest

astro_warp

no, i am asking should i not eat them? based on the theory here?

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AussieMarc

ah ok fair enough.. interesting stuff.. cheers TT

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toxictoffee

dont take my word for it wait for DaPs theory and science

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astro_warp

Well I think its a bad idea to stop eating food groups and unfortunately I have to admit to not eat nuts rules out a fairly large and nutrient rich food group.

That said I cant remember reading anyone saying not to eat nuts....

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toxictoffee

and carbs?

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Tinytom

LMAO I'll have to remember that one.

Even though carbs are not essential for the body, I like chips and I like flapjacks so I keep them in. lol.

Seriously though, I could never see myself eating a zero carb diet, I dont believe this would be condusive to the best gains in terms of bbing.

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toxictoffee

tom

for sure, carbless diets arent great for BBing

a CKD is just about do-able but if you want to grow it is for sure better to manipulate carbs but as for needing them to exist?

no, an SKD is fine for many people

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thestudbeast

Humans have only been eating large amounts of carbs since crop farming was introduced a few thousand years ago out of over 100000 years of reconisable existance. So your genetics are more inclined to use fat as a fuel source, it's just your lifestyle thats different.